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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
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+One-register-per-pin type device tree based pinctrl driver
+
+Required properties:
+- compatible : "pinctrl-single" or "pinconf-single".
+ "pinctrl-single" means that pinconf isn't supported.
+ "pinconf-single" means that generic pinconf is supported.
+
+- reg : offset and length of the register set for the mux registers
+
+- #pinctrl-cells : number of cells in addition to the index, set to 1
+ or 2 for pinctrl-single,pins and set to 2 for pinctrl-single,bits
+
+- pinctrl-single,register-width : pinmux register access width in bits
+
+- pinctrl-single,function-mask : mask of allowed pinmux function bits
+ in the pinmux register
+
+Optional properties:
+- pinctrl-single,function-off : function off mode for disabled state if
+ available and same for all registers; if not specified, disabling of
+ pin functions is ignored
+
+- pinctrl-single,bit-per-mux : boolean to indicate that one register controls
+ more than one pin, for which "pinctrl-single,function-mask" property specifies
+ position mask of pin.
+
+- pinctrl-single,drive-strength : array of value that are used to configure
+ drive strength in the pinmux register. They're value of drive strength
+ current and drive strength mask.
+
+ /* drive strength current, mask */
+ pinctrl-single,power-source = <0x30 0xf0>;
+
+- pinctrl-single,bias-pullup : array of value that are used to configure the
+ input bias pullup in the pinmux register.
+
+ /* input, enabled pullup bits, disabled pullup bits, mask */
+ pinctrl-single,bias-pullup = <0 1 0 1>;
+
+- pinctrl-single,bias-pulldown : array of value that are used to configure the
+ input bias pulldown in the pinmux register.
+
+ /* input, enabled pulldown bits, disabled pulldown bits, mask */
+ pinctrl-single,bias-pulldown = <2 2 0 2>;
+
+ * Two bits to control input bias pullup and pulldown: User should use
+ pinctrl-single,bias-pullup & pinctrl-single,bias-pulldown. One bit means
+ pullup, and the other one bit means pulldown.
+ * Three bits to control input bias enable, pullup and pulldown. User should
+ use pinctrl-single,bias-pullup & pinctrl-single,bias-pulldown. Input bias
+ enable bit should be included in pullup or pulldown bits.
+ * Although driver could set PIN_CONFIG_BIAS_DISABLE, there's no property as
+ pinctrl-single,bias-disable. Because pinctrl single driver could implement
+ it by calling pulldown, pullup disabled.
+
+- pinctrl-single,input-schmitt : array of value that are used to configure
+ input schmitt in the pinmux register. In some silicons, there're two input
+ schmitt value (rising-edge & falling-edge) in the pinmux register.
+
+ /* input schmitt value, mask */
+ pinctrl-single,input-schmitt = <0x30 0x70>;
+
+- pinctrl-single,input-schmitt-enable : array of value that are used to
+ configure input schmitt enable or disable in the pinmux register.
+
+ /* input, enable bits, disable bits, mask */
+ pinctrl-single,input-schmitt-enable = <0x30 0x40 0 0x70>;
+
+- pinctrl-single,low-power-mode : array of value that are used to configure
+ low power mode of this pin. For some silicons, the low power mode will
+ control the output of the pin when the pad including the pin enter low
+ power mode.
+ /* low power mode value, mask */
+ pinctrl-single,low-power-mode = <0x288 0x388>;
+
+- pinctrl-single,gpio-range : list of value that are used to configure a GPIO
+ range. They're value of subnode phandle, pin base in pinctrl device, pin
+ number in this range, GPIO function value of this GPIO range.
+ The number of parameters is depend on #pinctrl-single,gpio-range-cells
+ property.
+
+ /* pin base, nr pins & gpio function */
+ pinctrl-single,gpio-range = <&range 0 3 0>, <&range 3 9 1>;
+
+- interrupt-controller : standard interrupt controller binding if using
+ interrupts for wake-up events for example. In this case pinctrl-single
+ is set up as a chained interrupt controller and the wake-up interrupts
+ can be requested by the drivers using request_irq().
+
+- #interrupt-cells : standard interrupt binding if using interrupts
+
+This driver assumes that there is only one register for each pin (unless the
+pinctrl-single,bit-per-mux is set), and uses the common pinctrl bindings as
+specified in the pinctrl-bindings.txt document in this directory.
+
+The pin configuration nodes for pinctrl-single are specified as pinctrl
+register offset and values using pinctrl-single,pins. Only the bits specified
+in pinctrl-single,function-mask are updated.
+
+When #pinctrl-cells = 1, then setting a pin for a device could be done with:
+
+ pinctrl-single,pins = <0xdc 0x118>;
+
+Where 0xdc is the offset from the pinctrl register base address for the device
+pinctrl register, and 0x118 contains the desired value of the pinctrl register.
+
+When #pinctrl-cells = 2, then setting a pin for a device could be done with:
+
+ pinctrl-single,pins = <0xdc 0x30 0x07>;
+
+Where 0x30 is the pin configuration value and 0x07 is the pin mux mode value.
+These two values are OR'd together to produce the value stored at offset 0xdc.
+See the device example and static board pins example below for more information.
+
+In case when one register changes more than one pin's mux the
+pinctrl-single,bits need to be used which takes three parameters:
+
+ pinctrl-single,bits = <0xdc 0x18 0xff>;
+
+Where 0xdc is the offset from the pinctrl register base address for the
+device pinctrl register, 0x18 is the desired value, and 0xff is the sub mask to
+be used when applying this change to the register.
+
+
+Optional sub-node: In case some pins could be configured as GPIO in the pinmux
+register, those pins could be defined as a GPIO range. This sub-node is required
+by pinctrl-single,gpio-range property.
+
+Required properties in sub-node:
+- #pinctrl-single,gpio-range-cells : the number of parameters after phandle in
+ pinctrl-single,gpio-range property.
+
+ range: gpio-range {
+ #pinctrl-single,gpio-range-cells = <3>;
+ };
+
+
+Example:
+
+/* SoC common file */
+
+/* first controller instance for pins in core domain */
+pmx_core: pinmux@4a100040 {
+ compatible = "pinctrl-single";
+ reg = <0x4a100040 0x0196>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0xffff>;
+};
+
+/* second controller instance for pins in wkup domain */
+pmx_wkup: pinmux@4a31e040 {
+ compatible = "pinctrl-single";
+ reg = <0x4a31e040 0x0038>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0xffff>;
+};
+
+control_devconf0: pinmux@48002274 {
+ compatible = "pinctrl-single";
+ reg = <0x48002274 4>; /* Single register */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-single,bit-per-mux;
+ pinctrl-single,register-width = <32>;
+ pinctrl-single,function-mask = <0x5F>;
+};
+
+/* third controller instance for pins in gpio domain */
+pmx_gpio: pinmux@d401e000 {
+ compatible = "pinconf-single";
+ reg = <0xd401e000 0x0330>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ pinctrl-single,register-width = <32>;
+ pinctrl-single,function-mask = <7>;
+
+ /* sparse GPIO range could be supported */
+ pinctrl-single,gpio-range = <&range 0 3 0>, <&range 3 9 1>,
+ <&range 12 1 0>, <&range 13 29 1>,
+ <&range 43 1 0>, <&range 44 49 1>,
+ <&range 94 1 1>, <&range 96 2 1>;
+
+ range: gpio-range {
+ #pinctrl-single,gpio-range-cells = <3>;
+ };
+};
+
+
+/* board specific .dts file */
+
+&pmx_core {
+
+ /*
+ * map all board specific static pins enabled by the pinctrl driver
+ * itself during the boot (or just set them up in the bootloader)
+ */
+ pinctrl-names = "default";
+ pinctrl-0 = <&board_pins>;
+
+ board_pins: pinmux_board_pins {
+ pinctrl-single,pins = <
+ 0x6c 0xf
+ 0x6e 0xf
+ 0x70 0xf
+ 0x72 0xf
+ >;
+ };
+
+ uart0_pins: pinmux_uart0_pins {
+ pinctrl-single,pins = <
+ 0x208 0 /* UART0_RXD (IOCFG138) */
+ 0x20c 0 /* UART0_TXD (IOCFG139) */
+ >;
+ pinctrl-single,bias-pulldown = <0 2 2>;
+ pinctrl-single,bias-pullup = <0 1 1>;
+ };
+
+ /* map uart2 pins */
+ uart2_pins: pinmux_uart2_pins {
+ pinctrl-single,pins = <
+ 0xd8 0x118
+ 0xda 0
+ 0xdc 0x118
+ 0xde 0
+ >;
+ };
+};
+
+&control_devconf0 {
+ mcbsp1_pins: pinmux_mcbsp1_pins {
+ pinctrl-single,bits = <
+ 0x00 0x18 0x18 /* FSR/CLKR signal from FSX/CLKX pin */
+ >;
+ };
+
+ mcbsp2_clks_pins: pinmux_mcbsp2_clks_pins {
+ pinctrl-single,bits = <
+ 0x00 0x40 0x40 /* McBSP2 CLKS from McBSP_CLKS pin */
+ >;
+ };
+
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins>;
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins>;
+};